Included taxa
Smith, F. P. (1906). The spiders of the Diplocephalus group. Journal of the Quekett Microscopical Club (2) 9(58): 295-320. 
Species
| Species | Family | Page / figures | published as |
|---|---|---|---|
| Ceratinella brevis | Linyphiidae | 316 | Ceratinodes brevis |
| Ceratinella scabrosa | Linyphiidae | 317 | Ceratinodes scabrosa |
| Monocephalus fuscipes | Linyphiidae | 299 | Monocephalus fuscipes |
| Panamomops sulcifrons | Linyphiidae | 311 | Platyopis bicuspis |
| Pelecopsis elongata | Linyphiidae | 315 | Pelecopsis elongata |
| Pelecopsis mengei | Linyphiidae | 315 | Pelecopsis mengei |
| Pelecopsis parallela | Linyphiidae | 315 | Pelecopsis parallelus |
| Peponocranium ludicrum | Linyphiidae | 312 (S of Peponocranium orbiculatum, P. penultimum and Walckenaeria miser; P. orbiculatum revalidated by Wiehle, 1960a: 303) | Peponocranium ludicrum |
| Saloca diceros | Linyphiidae | 311 | Platyopis diceros |
Genera
| Genus | Family | Page |
|---|---|---|
| Monocephalus Smith, 1906 | Linyphiidae | 299 |